Fire-hydrant.



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FinE-HYDRANTL matizar-1a?.

To LIZ teli-uni, t my m'nfcclilt.'

Be it knownthat l'Ai.Fiti:D -A CowLEs, a citizen of the United States, and a resident lof the borough of Manhattan, city, county, and

Stateof New York, liave invented certainj new and useful Improvements in Fire- Hydrants, of wlii'e'l'i the followii'igis a specification, accompanied by drawings. i

This invent-ion relates-to an improvement 1n fire-hydrants, and hasfor its object to efl'ectually prevent freezing lof the' water which would be contained in the fire-hydrant under ordinary-conditions and subjected t'o a freezing-external temperature.

Further o b'ccts ofthe invention willheureinafter appear; and to these endstheinvention consists of a firelivdrant- `for carrying out.

the above objectsembodying the features off construct-ion. coiiibinatioi'is of elements, and

varrangeinent of parts liaviiigjthe general" inode ofv operation'substantiallyas hereinafter full ydescribcd and claimed in thisspecification and shownin the` accompanyingi drawings, in which- Figure-1 is a vertical longitudinal sectional 'view of 4a lire-hydrant. embodying the inven-v tion arranged in propel' relatioirtoa street'.y jand'sidewalk. Fig. 2 is an enlargedvertical .sectional view of the lire-hydrant Titltattachnlent. Fg. 3 is a top plan view of the pressure-gage used in connect-ion with this inven'tion. l 1

According to this invention fluid-.pressure .f

as that of air or other suit-able gas or Huid, is applied to the surface ofthe water within the fire-hydrant in 'excess-of the water-pressure g in the hydrant to force the water. down inl the pipes below the vpoint at which it would hel su )jected tofa temperature below thefreez' ing-point of water'. in this way the water -is prevented from freezing when the' h v# drant'is not in use and by releasing the lluidpressurethe water will risefin thestand-pipe of thel hydrant ready for use when required.

Referring to the drawings, represen ts n suitable city street, li is the sidewalk, and (I represents the-curbing. -.'l`he lire-hydrant l) i is arranged in the usual iiiiiniiei' adjacent the curb and is provided withf'tlie stand-pi )e ll, .connecting in any suitable manner wit 1 the water-'main l". The li vdrant provided with the usual valve G, access to which is obtained A suitable connection K. is provided'in the Specification of Letters Patent. Applicant find my 25.1905. 'smul N6. 262,141.

Patented Aug, i4, 190e.

i stand-piper) hirattachiiig a iuiiip or other dev icefor compressing'or lor orcingv the surinstanceahandpuinp Q' is shown provided with a suitable hose or otherconnectlon Rf,

e in the. stand-pipe ol' the liydrantl' '-t .hei'iressure exerted by the air or. gas in ex-V j cess fofjthe* waterpifessuie contained. in'v the hydrant@'andV in this instance.. a pressure-'gage S is shown connected to the pipeliand prolliefpiessiireigage is soarraiiged 'thatftheinfl dicator"will continue tosliowan increase in l pressure' 4until -the \\'atei'-level is reducedf 1t0 ,'-the' water-level ol' the water-main to wlnchl 4the lire-hydrant connection is attached, .so

l that when this `point has been reached the puiiip'ing may be stopped. The water will.

' then be maintained below the. point at which freezing can occur.

Obviously some features of this invention vmay be `used-without others, and the'invention may be embodied in widely-varying '.Tlierefore, without limiting the invention tothe devices shown and describedand without enuineral ing equivalents, I claim, and de'- l sire tio obtain b v'la-'tiers Patent, the following:

Al The combination with a'lireliydrantof means for forcing the waterthei'ein to a-level i `below that at which freezing l-will ojceui", and i means for maintaining the waiter at such level i:1Slongasdesired.

' 2*. The `conil "nation .with a'i'lirc--liydrant -and its stand-'pipe below the-surface of the ground, of means l'oi' forcing the water in said Estand-pipeto a point sullcientlly" below the surfiice of. tlieground toprevcnt the. water .from freezing, and inea-lisier niaintainingthe ifwater inthe stand-pipe at such place to pre'- vent freezing. f

3.- 'lhe coml'ii-nation witha v lirehydrant of meansrforfexerting lluidiressurc lupon .the

i sur-face of tliewaterin the iydrant and therefaceofthe water down inthe stand-pip adapted to becoiuiected tothe connection K pressure within the lire-hydrant, and in this Suitable iue'ans are provided for indicating Avided with a, dial 'l andiiidieating-needle U.

h y div-.pressing said -water below the surface el the ground to a .snllieientdepth to-prevenl.

freezing, and means for maint-ainingsaid wabelow vthat atwhirhfreezing will occur, means for maintaining the water at such level as long as desired, and means. for indicating the pressure exerted hy the air in excess of the water-pressure contained in the hydrant.

6. The combination with a fire-hydrant and its stand-pipe below the' surface of the ground. of means for forcing the Water in said stand-pipe to a point sufiiciently below the surface of the ground to lprevent the Water from freezing. means forI maintaining the Water in the stand-pipe at such place toprevent freezing. and r'neans for indicating. the presvmeans for forein.r 1

. In testiinony sure exerted by the air in excess of the waterpressure eontainmliin the hydrant. 7. 'lhe-cemlmiation witha hre-hydrant of means` for exerting luid- )ressure uponthe.

Vsurface ol' the waterin the 1 drant and thereby depressing said water be ow the surface of the ground to .a snflicient depth to prevent freezing, means for maintaining said water at Vthe desired depth, and means for indicating the pressure exerted by the air in excess of the waterpressure contained in the h drant.

8.' The combination with a re-hy rant of the`water therein to a level below -that at w ich freezing will occur, and

. means for indicating the pressure exerted 1n excess of theWater-pressure contained in .the hydrant. v

whereof I have signed this specification in the presence of two subscribing witnesses."

vALFRED A. coWLEs. 

